As static posted, this problem is not related to ISPConfig. Javascript is a client side scripting technology and not a server side script. Do you get the correct HTML page when you open it in a browser?

I figured out the problem..
it seems that my ubuntu o/s did have some problems with my .js script

for some reason my script totally crashes when i use a é or ë
(notice the ' and " above the e.. )
got any idea why it does this?
does it has to do with fonts, or something else?
(i just got the newest Ubuntu server.. followed the manual "The perfect Setup", etc)